94 citations · 274 across the 11 of their papers we have counts for
6 papers · 1 filter
Effects of longer-range interactions on unconventional superconductivity
S. Raghu, E. Berg, A. V. Chubukov +1
We analyze the effect of the non-vanishing range of electron-electron repulsion on the mechanism of unconventional superconductivity. We present asymptotically exact weak-coupling…
Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors
E. Berg, S. A. Kivelson, D. J. Scalapino
We study a diagonal 2-orbital ladder model of the Fe based superconductors using the density matrix renormalization group method. At half filling, we find a close competition betwe…
Mesoscopics and the High Problem
D. J. Scalapino, E. Berg, S. A. Kivelson
Mesoscopic physics concerns itself with systems which are intermediate between a single atom and a bulk solid. Besides the many intrinsically interesting properties of mesoscopic s…
A Twisted Ladder: relating the Fe superconductors to the high cuprates
E. Berg, S. A. Kivelson, D. J. Scalapino
We construct a 2-leg ladder model of an Fe-pnictide superconductor and discuss its properties and relationship with the familiar 2-leg cuprate model. Our results suggest that the u…
A route to high temperature superconductivity in composite systems
E. Berg, D. Orgad, S. A. Kivelson
Apparently, some form of local superconducting pairing persists to temperatures well above the maximum observed in underdoped cuprates, \textit{i.e.} is suppressed due…
Stability of nodal quasi-particles in superconductors with coexisting orders
E. Berg, C-C. Chen, S. A. Kivelson
We establish a condition for the perturbative stability of zero energy nodal points in the quasi-particle spectrum of superconductors in the presence of coexisting \textit{commensu…